CN104963985A - Magneto-rheological damper of integrated energy recovery device - Google Patents
Magneto-rheological damper of integrated energy recovery device Download PDFInfo
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- CN104963985A CN104963985A CN201510394554.9A CN201510394554A CN104963985A CN 104963985 A CN104963985 A CN 104963985A CN 201510394554 A CN201510394554 A CN 201510394554A CN 104963985 A CN104963985 A CN 104963985A
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- inductor coil
- piston
- piston rod
- seal ring
- manhole
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F9/00—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium
- F16F9/32—Details
- F16F9/53—Means for adjusting damping characteristics by varying fluid viscosity, e.g. electromagnetically
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F9/00—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium
- F16F9/32—Details
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F2224/00—Materials; Material properties
- F16F2224/04—Fluids
- F16F2224/045—Fluids magnetorheological
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Fluid-Damping Devices (AREA)
Abstract
The invention discloses a magneto-rheological damper of an integrated energy recovery device. The magneto-rheological damper is composed of an energy recovery device, an upper end cover, a lower end cover, an outer sleeve, a piston rod and the like. The energy recovery device is arranged in a cavity of the piston rod, and eight permanent magnets and eight partition pieces are fixed to a support rod through a holding pin and a fastening pin. Up-and-down motions of the piston rod drive an induction coil winding frame to conduct reciprocating motions. Under the action of the permanent magnets, an induction coil which is wound on the induction coil winding frame generates alternating currents, after the alternating current is converted into direct currents through a rectifying circuit, the direct current can be directly used for direct current supply of an exciting coil in a piston winding groove, and damping force can be generated; in addition, the converted direct current can be stored in a storage circuit, and energy harvesting of vibrating mechanical energy can be achieved. The energy harvesting and the damping force can be controlled to be a whole, space is used reasonably, the whole structure of the damper is compact, and the device is particularly suitable for being applied to a semi-automatic shock mitigation system under special circumstances such as outage.
Description
Technical field
The present invention relates to a kind of MR damper, particularly relate to a kind of MR damper of integrated energy recovering device.
Background technique
MR damper is a kind of Novel intelligent damper part be widely used in semi-active control aystem.It is mainly by applying a certain size electric current to the drive coil in damper piston winding slot, produce magnetic field and the yield strength of the magnetic flow liquid flowed through in liquid chunnel is changed, thus dynamically changes output damping force.
The feature that the Millisecond speed of response that MR damper has, large control range and large damping force export, makes it become half outstanding active actuators part of industrial application.At present, MR damper obtains extensive use in vibration damping of the vibration damping vibration prevention system of building and bridge, rail vehicles and automobile suspension system etc.But existing MR damper needs adjustable magnetic field excitation, this needs external power supply to input.And at some special occasions, such as remote districts, electric power is difficult to send to; Or due to the reasons such as natural disaster cause power supply be difficult to continue ensure, these factors will restriction MR damper application.
Publication number is that the sensor of structural vibration and the power supply of MR damper are integrated on minitype permanent magnetism formula direct current generator by the Chinese invention patent " a kind of self-power-supply magnetorheological intelligent vibration damping device " of CN200710034309.2, drive DC generator to generate electricity by the mode being arranged in the rack geared outside vibration damper, thus power to MR damper.But its narrow limitation is obvious, because electricity generating device is arranged in outside damper, cause whole vibration insulating system bulky, and higher to operating environment requirements.Publication number is that the Chinese invention patent " a kind of self-supplied magnetic current damper " of CN101550982 A proposes an a kind of multiple-blade butterfly electromagnetic mechanical energy collecting device, and energy collecting device is arranged on the piston base of MR damper.But this structure also has certain narrow limitation, because magnetic flow liquid is thicker, cause blade rotational speed slow, the electric energy of generation is not enough to realize powering to the field coil in damper.
Based on this, be necessary the MR damper proposing a kind of novel integrated energy recovering device, realize the highly effective gathering of damper vibration mechanical energy, and effectively reduce the boundary dimension of damper.
Summary of the invention
In order to overcome MR damper Problems existing described in background technique and meet the actual operation requirements of MR damper, the invention provides a kind of MR damper of integrated energy recovering device.8 permanent magnets of order installation and 8 partitions are fixedly mounted on strut by fixed pin and fastening sheet by this energy recycle device; The inductor coil be wrapped on inductor coil drum is made up of two groups of absolute coils, and dynamic is answered coil winding frame to-and-fro motion by moving up and down of piston rod; Under permanent magnet effect, inductor coil will produce Ac in to-and-fro motion, convert the Ac of generation to direct current by rectification circuit, thus can be directly used in the direct current supply of the drive coil in piston winding slot, and generation can supply damping force; In addition, the direct current after conversion also can be stored in accumulator, really realizes energy acquisition and the recycling of vibration mechanical energy.The present invention integrates energy acquisition and damping force is controlled, and by being built in plunger by energy recycle device, structure is simple, and space utilization is reasonable, effectively reduces the overall structure size of damper.
The technical solution adopted for the present invention to solve the technical problems comprises: strut (1), lower end cap (2), floating piston (3), screw I (4), seal ring I (5), baffle plate (6), screw II (7), drive coil (8), piston (9), outer sleeve (10), piston rod (11), inductor coil (12), inductor coil drum (13), permanent magnet (14), partition (15), upper end cap (16), screw III (17), fastening sheet (18), seal ring II (19), fixed pin (20), seal ring III (21), seal ring IV (22), seal ring V (23), seal ring VI (24), seal ring VII (25) and locking nut (26), lower end cap (2) and outer sleeve (10) are rigidly connected by screw I (4), manhole is processed with in the middle of lower end cap (2), strut (1) and lower end cap (2) manhole Spielpassung, sealed by seal ring VII (25) between strut (1) and lower end cap (2) manhole, strut (1) lower end head is processed with outside thread, and is fastenedly connected by locking nut (26), be processed with manhole, floating piston (3) manhole internal surface and strut (1) outer surface Spielpassung in the middle of floating piston (3), and sealed by seal ring VI (24), floating piston (3) circle end face coordinates with outer sleeve (10) internal surface gaps, and is sealed by seal ring I (5), fixed pin (20) upper end portion and underpart are processed with outside thread respectively, fixed pin (20) underpart is threaded with strut (1) upper end portion, manhole is processed with, permanent magnet (14) manhole internal surface and fixed pin (20) outer surface transition fit in the middle of permanent magnet (14), manhole is processed with, partition (15) manhole internal surface and fixed pin (20) outer surface transition fit in the middle of partition (15), partition (15) is arranged on fixed pin (20), combines closely in partition (15) lower end surface and strut (1) upper-end surface, permanent magnet (14) is arranged on fixed pin (20), combines closely in permanent magnet (14) lower end surface and partition (15) upper-end surface, permanent magnet (14) with-N pole, N pole in opposite directions,-S pole, S pole structure is in opposite directions placed, separated by a partition (15) between two permanent magnets (14), 8 partitions (15) and 8 permanent magnets (14) are arranged on fixed pin (20) in order successively, and are compressed by fastening sheet (18), be processed with tapped through hole in the middle of fastening sheet (18), fastening sheet (18) and fixed pin (20) are rigidly connected by screw thread, inductor coil drum (13) is processed with 14 winding slots, inductor coil (12) is wrapped in inductor coil drum (13) winding slot, manhole is processed with in the middle of piston rod (11), inductor coil drum (13) outer surface coordinates with piston rod (11) manhole internal surface gaps, inductor coil drum (13) upper-end surface and upper end cap (16) end contact, inductor coil drum (13) lower end surface and baffle plate (6) end contact, piston (9) internal surface and piston rod (11) lower end outer surface transition fit, piston (9) carries out axially locating by the shoulder of piston rod (11) lower end, piston (9) outer side surface is processed with winding slot, and drive coil (8) is wrapped in piston (9) winding slot, manhole is processed with, baffle plate (6) and strut (1) transition fit in the middle of baffle plate (6), baffle plate (6) and strut (1) are sealed by seal ring V (23), baffle plate (6) and piston (9) are sealed by seal ring IV (22), piston (9) and piston rod (11) are sealed by seal ring III (21), piston rod (11) and outer sleeve (10) are sealed by seal ring II (19), screw II (7) is used for fixing baffle plate (6) and piston rod (11), carries out axial restraint to inductor coil drum (13) and piston (9) simultaneously, upper end cap (16) is fixedly connected with by screw III (17) with piston rod (11).
Energy recycle device is made up of strut (1), piston rod (11), inductor coil (12), inductor coil drum (13), permanent magnet (14), partition (15), fastening sheet (18) and fixed pin (20).Strut (1) and fixed pin (20) are made up of non-magnet_conductible material; Piston rod (11), inductor coil drum (13), partition (15) and fastening sheet (18) are made up of permeability magnetic material.The magnetic line of force that energy recycle device produces enters partition (15) and inductor coil drum (13) by the N pole of permanent magnet (14), arrive piston rod (11) inwall, returned to the S pole of permanent magnet (14) again by inductor coil drum (13), form closed magnetic circuit.Inductor coil (12) is made up of two groups of absolute coils, is wound in inductor coil drum (13) winding slot respectively; Under the effect of electromagnet (14), inductor coil (12) produces Ac in to-and-fro motion, by rectification circuit, Ac is converted to direct current, be directly used in the direct current supply of the drive coil (8) in piston (9) winding slot, generation can supply damping force; Also can be stored in accumulator.
The lead-in wire A of two groups of absolute coils of inductor coil (12)
1, A
2and B
1, B
2entered the wire lead slot (102) of inductor coil drum (13) upper end portion respectively by the wire lead slot (103) of inductor coil drum (13), then draw from the fairlead (101) of upper end cap (16).The lead-in wire C of drive coil (8)
1, C
2the fairlead (202) of piston rod (11) is entered by the wire lead slot (201) of piston (9), then entered the wire lead slot (102) of inductor coil drum (13) upper end portion by the wire lead slot (103) of inductor coil drum (13), finally draw from the fairlead (101) of upper end cap (16).
Magnetic flow liquid is filled in the closed cavity volume I and II surrounded between floating piston (3), outer sleeve (10) and piston (9).The closed cavity volume III surrounded between floating piston (3), outer sleeve (10) and lower end cap (2) fills pressurized gas.When piston rod (11) moves up and down, can there is respective change in the volume of filling the closed cavity volume I and II of magnetic flow liquid, and now floating piston (3) can realize the volume compensation of closed cavity volume I and II by fluctuating.
The present invention is compared with background technique, and the beneficial effect had is:
(1) 8 permanent magnets of order installation and 8 partitions are fixedly mounted on strut by fixed pin and fastening sheet by energy recycle device of the present invention; The inductor coil be wrapped on inductor coil drum is made up of two groups of absolute coils, and dynamic is answered coil winding frame to-and-fro motion by moving up and down of piston rod; Under permanent magnet effect, inductor coil will produce Ac in to-and-fro motion, convert the Ac of generation to direct current by rectification circuit, thus can be directly used in the direct current supply of the drive coil in piston winding slot, produce controllable damping force.The present invention can make MR damper not rely on extra power just can normally work, thus further increases the application area of MR damper.
(2) direct current changed in energy recycle device of the present invention also can be stored in accumulator, thus really realizes energy acquisition and the recycling of vibration mechanical energy.
(3) the present invention integrates energy acquisition and damping force is controlled, and by being built in plunger by energy recycle device, structure is simple, and space utilization is reasonable, effectively reduces the overall structure size of MR damper.
(4) the present invention can provide higher damping force under lower operating current, and make the overall power of MR damper less, energy utilization efficiency is higher.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention.
Fig. 2 is that permanent magnet of the present invention and spacer structure arrange schematic diagram.
Fig. 3 is the lead-in wire schematic diagram of two groups of absolute coils in inductor coil of the present invention.
Fig. 4 is drive coil of the present invention lead-in wire schematic diagram.
Fig. 5 is magnetic line of force distribution schematic diagram in inductor coil of the present invention and drive coil.
Embodiment
Below in conjunction with drawings and Examples, the invention will be further described:
As shown in Figure 1, the present invention includes strut 1, lower end cap 2, floating piston 3, screw I 4, seal ring I 5, baffle plate 6, screw II 7, drive coil 8, piston 9, outer sleeve 10, piston rod 11, inductor coil 12, inductor coil drum 13, permanent magnet 14, partition 15, upper end cap 16, screw III 17, fastening sheet 18, seal ring II 19, fixed pin 20, seal ring III 21, seal ring IV 22, seal ring V 23, seal ring VI 24, seal ring VII 25 and locking nut 26.
Permanent magnet 14 of the present invention and partition 15 structural configuration schematic diagram shown in Fig. 2.With-N pole, N pole in opposite directions ,-S pole, S pole structural configuration in opposite directions, is separated by a partition 15 between two permanent magnets 14 permanent magnet 14, and 8 partitions 15 and 8 permanent magnets 14 are arranged on fixed pin 20 in order successively, and are compressed by fastening sheet 18; Fastening sheet 18 and fixed pin 20 are rigidly connected by screw thread.
It is the lead-in wire schematic diagram of two groups of absolute coils in inductor coil 12 of the present invention shown in Fig. 3.Inductor coil 12 is made up of two groups of absolute coils, is wound in respectively in inductor coil drum 13 winding slot.Inductor coil drum 13 is provided with 14 winding slots, wherein one group of absolute coil respectively from winding slot 2., 4., 6., 8., 10. and be wound around by the mode of series connection, two lead-in wire A
1and A
2entered the wire lead slot 102 of inductor coil drum 13 upper end portion by the wire lead slot 103 of inductor coil drum 13, then draw damper from the fairlead 101 of upper end cap 16; Other one group of absolute coil respectively from winding slot 1., 3., 5., 7., 9. and by series connection mode be wound around, two lead-in wire B
1and B
2entered the wire lead slot 102 of inductor coil drum 13 upper end portion by the wire lead slot 103 of inductor coil drum 13, then draw damper from the fairlead 101 of upper end cap 16.
It is the lead-in wire schematic diagram of drive coil 8 of the present invention shown in Fig. 4.Two lead-in wire C of drive coil 8
1and C
2entered the fairlead 202 of piston rod 11 by the wire lead slot 201 of piston 9, then entered the wire lead slot 102 of inductor coil drum 13 upper end portion by the wire lead slot 103 of inductor coil drum 13, finally draw damper from the fairlead 101 of upper end cap 16.
It is magnetic line of force distribution schematic diagram in inductor coil 12 of the present invention and drive coil 8 shown in Fig. 5.The magnetic line of force produced in inductor coil 12 enters partition 15 and inductor coil drum 13 by the N pole of permanent magnet 14, arrives piston rod 11 inwall, then is returned to the S pole of permanent magnet 14 by inductor coil drum 13, forms closed magnetic circuit.
Inductor coil 12 is made up of two groups of absolute coils, is wound in inductor coil drum 13 winding slot respectively; The induced voltage of two groups of absolute coil generations can be expressed as:
(1)
(2)
In formula (1) and (2)
e mfor maximum induction electromotive force,
ωfor excited frequency.
Because inductor coil 12 produces Ac in to-and-fro motion, by rectification circuit, Ac is converted to direct current.
The magnetic line of force produced in drive coil 8 is by piston 9, and the magnetic flow liquid in liquid chunnel, arrives outer sleeve 10, then through liquid chunnel return piston 9, forms closed magnetic circuit.
Working principle of the present invention is as follows:
When there is external excitation, piston rod 11 in axial direction does relative movement, dynamic answers coil winding frame 13 reciprocating, under permanent magnet 14 acts on, the inductor coil 12 be wrapped in inductor coil drum 13 will produce Ac in to-and-fro motion, convert the Ac of generation to direct current by rectification circuit, thus the direct current supply of the drive coil in piston winding slot can be directly used in.By powering to drive coil 8, producing magnetic field, the magnetic flow liquid yield strength in the damping clearance formed between change piston 9 and outer sleeve 10, producing controllable damping force, thus complete the recovery of vibrating machine energy.
If when drive coil 8 is by external power source, the direct current that in energy recycle device, Collect conversion is come also can be stored in accumulator.
Claims (4)
1. the MR damper of an integrated energy recovering device, it is characterized in that comprising: strut (1), lower end cap (2), floating piston (3), screw I (4), seal ring I (5), baffle plate (6), screw II (7), drive coil (8), piston (9), outer sleeve (10), piston rod (11), inductor coil (12), inductor coil drum (13), permanent magnet (14), partition (15), upper end cap (16), screw III (17), fastening sheet (18), seal ring II (19), fixed pin (20), seal ring III (21), seal ring IV (22), seal ring V (23), seal ring VI (24), seal ring VII (25) and locking nut (26), lower end cap (2) and outer sleeve (10) are rigidly connected by screw I (4), manhole is processed with in the middle of lower end cap (2), strut (1) and lower end cap (2) manhole Spielpassung, sealed by seal ring VII (25) between strut (1) and lower end cap (2) manhole, strut (1) lower end head is processed with outside thread, and is fastenedly connected by locking nut (26), be processed with manhole, floating piston (3) manhole internal surface and strut (1) outer surface Spielpassung in the middle of floating piston (3), and sealed by seal ring VI (24), floating piston (3) circle end face coordinates with outer sleeve (10) internal surface gaps, and is sealed by seal ring I (5), fixed pin (20) upper end portion and underpart are processed with outside thread respectively, fixed pin (20) underpart is threaded with strut (1) upper end portion, manhole is processed with, permanent magnet (14) manhole internal surface and fixed pin (20) outer surface transition fit in the middle of permanent magnet (14), manhole is processed with, partition (15) manhole internal surface and fixed pin (20) outer surface transition fit in the middle of partition (15), partition (15) is arranged on fixed pin (20), combines closely in partition (15) lower end surface and strut (1) upper-end surface, permanent magnet (14) is arranged on fixed pin (20), combines closely in permanent magnet (14) lower end surface and partition (15) upper-end surface, permanent magnet (14) with-N pole, N pole in opposite directions,-S pole, S pole structure is in opposite directions placed, separated by a partition (15) between two permanent magnets (14), 8 partitions (15) and 8 permanent magnets (14) are arranged on fixed pin (20) in order successively, and are compressed by fastening sheet (18), be processed with tapped through hole in the middle of fastening sheet (18), fastening sheet (18) and fixed pin (20) are rigidly connected by screw thread, inductor coil drum (13) is processed with 14 winding slots, inductor coil (12) is wrapped in inductor coil drum (13) winding slot, manhole is processed with in the middle of piston rod (11), inductor coil drum (13) outer surface coordinates with piston rod (11) manhole internal surface gaps, inductor coil drum (13) upper-end surface and upper end cap (16) end contact, inductor coil drum (13) lower end surface and baffle plate (6) end contact, piston (9) internal surface and piston rod (11) lower end outer surface transition fit, piston (9) carries out axially locating by the shoulder of piston rod (11) lower end, piston (9) outer side surface is processed with winding slot, and drive coil (8) is wrapped in piston (9) winding slot, manhole is processed with, baffle plate (6) and strut (1) transition fit in the middle of baffle plate (6), baffle plate (6) and strut (1) are sealed by seal ring V (23), baffle plate (6) and piston (9) are sealed by seal ring IV (22), piston (9) and piston rod (11) are sealed by seal ring III (21), piston rod (11) and outer sleeve (10) are sealed by seal ring II (19), screw II (7) is used for fixing baffle plate (6) and piston rod (11), carries out axial restraint to inductor coil drum (13) and piston (9) simultaneously, upper end cap (16) is fixedly connected with by screw III (17) with piston rod (11).
2. the MR damper of a kind of integrated energy recovering device according to claim 1, is characterized in that: energy recycle device is made up of strut (1), piston rod (11), inductor coil (12), inductor coil drum (13), permanent magnet (14), partition (15), fastening sheet (18) and fixed pin (20); Strut (1) and fixed pin (20) are made up of non-magnet_conductible material; Piston rod (11), inductor coil drum (13), partition (15) and fastening sheet (18) are made up of permeability magnetic material; The magnetic line of force that energy recycle device produces enters partition (15) and inductor coil drum (13) by the N pole of permanent magnet (14), arrive piston rod (11) inwall, returned to the S pole of permanent magnet (14) again by inductor coil drum (13), form closed magnetic circuit; Inductor coil (12) is made up of two groups of absolute coils, is wound in inductor coil drum (13) winding slot respectively; Under the effect of electromagnet (14), inductor coil (12) produces Ac in to-and-fro motion, by rectification circuit, Ac is converted to direct current, be directly used in the direct current supply of the drive coil (8) in piston (9) winding slot, generation can supply damping force; Also can be stored in accumulator.
3. the MR damper of a kind of integrated energy recovering device according to claim 1, is characterized in that: the lead-in wire A of two groups of absolute coils of inductor coil (12)
1, A
2and B
1, B
2entered the wire lead slot (102) of inductor coil drum (13) upper end portion respectively by the wire lead slot (103) of inductor coil drum (13), then draw from the fairlead (101) of upper end cap (16); The lead-in wire C of drive coil (8)
1, C
2the fairlead (202) of piston rod (11) is entered by the wire lead slot (201) of piston (9), then entered the wire lead slot (102) of inductor coil drum (13) upper end portion by the wire lead slot (103) of inductor coil drum (13), finally draw from the fairlead (101) of upper end cap (16).
4. the MR damper of a kind of integrated energy recovering device according to claim 1, is characterized in that: fill magnetic flow liquid in the closed cavity volume I and II surrounded between floating piston (3), outer sleeve (10) and piston (9); The closed cavity volume III surrounded between floating piston (3), outer sleeve (10) and lower end cap (2) fills pressurized gas; When piston rod (11) moves up and down, can there is respective change in the volume of filling the closed cavity volume I and II of magnetic flow liquid, and now floating piston (3) can realize volume compensation by fluctuating.
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|---|---|---|---|
| CN201510394554.9A CN104963985B (en) | 2015-07-08 | 2015-07-08 | A kind of MR damper of integrated energy retracting device |
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| CN201510394554.9A CN104963985B (en) | 2015-07-08 | 2015-07-08 | A kind of MR damper of integrated energy retracting device |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105511513A (en) * | 2015-11-24 | 2016-04-20 | 西安空间无线电技术研究所 | Electromagnetic damping type vibrations controlling apparatus of spaceborne equipment |
| CN106499769A (en) * | 2016-12-24 | 2017-03-15 | 浙江师范大学 | MR fluid shock absorber under a kind of shearing/extruding tandem working pattern |
| CN106930914A (en) * | 2017-03-20 | 2017-07-07 | 河南科技大学 | A kind of electric automobile feed energy suspension TRT |
| CN107701644A (en) * | 2017-09-29 | 2018-02-16 | 福州大学 | A kind of self energizing MR damper and its method of work |
| CN108167371A (en) * | 2018-02-02 | 2018-06-15 | 山东科技大学 | A kind of new permanent-magnet formula MR damper |
| CN108869614A (en) * | 2018-08-15 | 2018-11-23 | 山东大学 | A kind of rotary self-adaptive magnetorheological fluid shock absorber |
| US20200318708A1 (en) * | 2019-04-02 | 2020-10-08 | National Oilwell Varco Norway As | System and Method for Improved Heave Compensation |
| CN115823173A (en) * | 2022-12-31 | 2023-03-21 | 重庆大学 | Magneto-rheological and permanent magnet mixed self-powered damping device based on nested piston structure |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105511513A (en) * | 2015-11-24 | 2016-04-20 | 西安空间无线电技术研究所 | Electromagnetic damping type vibrations controlling apparatus of spaceborne equipment |
| CN106499769A (en) * | 2016-12-24 | 2017-03-15 | 浙江师范大学 | MR fluid shock absorber under a kind of shearing/extruding tandem working pattern |
| CN106930914A (en) * | 2017-03-20 | 2017-07-07 | 河南科技大学 | A kind of electric automobile feed energy suspension TRT |
| CN107701644A (en) * | 2017-09-29 | 2018-02-16 | 福州大学 | A kind of self energizing MR damper and its method of work |
| CN108167371A (en) * | 2018-02-02 | 2018-06-15 | 山东科技大学 | A kind of new permanent-magnet formula MR damper |
| CN108869614A (en) * | 2018-08-15 | 2018-11-23 | 山东大学 | A kind of rotary self-adaptive magnetorheological fluid shock absorber |
| CN108869614B (en) * | 2018-08-15 | 2019-03-12 | 山东大学 | A kind of rotary self-adaptive magnetorheological fluid shock absorber |
| US20200318708A1 (en) * | 2019-04-02 | 2020-10-08 | National Oilwell Varco Norway As | System and Method for Improved Heave Compensation |
| CN115823173A (en) * | 2022-12-31 | 2023-03-21 | 重庆大学 | Magneto-rheological and permanent magnet mixed self-powered damping device based on nested piston structure |
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